/in/foo.cc: In function 'int main()':
/in/foo.cc:18:2: error: 'memset' was not declared in this scope
  memset(ismost,max,false);
  ^~~~~~
/in/foo.cc:18:2: note: suggested alternative: 'wmemset'
  memset(ismost,max,false);
  ^~~~~~
  wmemset
/in/foo.cc:6:36: warning: unused variable 'most' [-Wunused-variable]
  int n,a[max],num[max],sum,top,ave,most;
                                    ^~~~